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首页> 外文会议>Cluster and double star symposium >SIMULTANEOUS DOUBLE STAR AND CLUSTER FTES OBSERVATIONS ON THEDAWNSIDE FLANK OF THE MAGNETOSPHERE
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SIMULTANEOUS DOUBLE STAR AND CLUSTER FTES OBSERVATIONS ON THEDAWNSIDE FLANK OF THE MAGNETOSPHERE

机译：磁球斜面的同时双星和簇FTES观测

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摘要

We present Cluster and Double Star-1 (TC-1)rnobservations from a close magnetic conjunction onrnMay 8, 2004. The five spacecraft were on the dawnsidernflank of the magnetosphere, with TC-1 located near thernequatorial plane and Cluster at higher geographicrnlatitudes in the southern hemisphere. TC-1, at itsrnapogee, skimmed the magnetopause for almost 8 hoursrn(between 08:00-16:00 UT). Flux Transfer Eventsrn(FTEs), moving southward/tailward from thernreconnection site, were observed by TC-1 throughoutrnalmost all of the period. Cluster, travelling on a mainlyrndawn-dusk trajectory, crossed the magnetopause atrnaround 10:30 UT in the same Magnetic Local Timern(MLT) sector as TC-1 and remained close to thernmagnetopause boundary layer in the southernrnhemisphere. The four Cluster spacecraft observedrnFTEs for a period of 6.5 hours between 07:30 andrn14:00 UT.rnFrom the properties of these FTEs, the reconnectionrnsite was located northward of both TC-1 and Cluster onrnthe dawn flank of the magnetosphere. Reconnectionrnoccurred between draped magnetosheath and closedrnmagnetospheric field lines. Despite variablerninterplanetary magnetic field (IMF) conditions andrnIMF-Bz turnings, the IMF clock-angle remained greaterrnthan 70° and the location site appeared to remainrnrelatively stable in position during the whole period.rnThis result is in agreement with previous studies whichrnreported that the dayside reconnection remained activernfor an IMF clock-angle greater than 70°. Thernsimultaneous observation of FTEs at both Cluster andrnTC-1, separated by 2 hours in MLT, implies that thernreconnection site on the magnetopause must have beenrnextended over several hours in MLT. This event hasrnbeen already presented in more details in [1].
机译：我们从2004年5月8日的近距离磁性对合中给出了星团和双星1（TC-1）的星空观测。这五个航天器位于磁层的黎明侧面，TC-1位于赤道平面附近，星团在较高的地理纬度上。南半球。 TC-1在其容器中脱脂了近8个小时（UT上午08：00-16：00之间）。 TC-1在几乎整个时期内都观察到了从重新连接点向南/向后移动的通量传递事件。团簇以主要是黎明-黄昏的轨迹行进，在与TC-1相同的磁性局部Timern（MLT）扇区中，在大约10:30 UT越过了磁层顶，并保持接近南半球的磁层顶边界层。从07:30到14:00 UT之间，四颗星团航天器观测到FTE持续了6.5个小时。从这些FTE的特性来看，重新连接的地点位于TC-1和星团的北面，位于磁层的黎明侧面。重叠的磁石场和封闭的磁层磁场线之间发生重新连接。尽管行星际磁场（IMF）的条件变化和IMF-Bz的变化，IMF的时钟角仍保持大于70°，并且位置在整个时期内似乎都保持相对稳定。这与以前的研究一致，即白天重新连接对于大于70°的IMF时钟角度保持激活状态。在MLT中，在簇和TC-1处同时观察到FTE，相隔2小时，这意味着在MLT中，磁更年期上的重新连接位点必须延长了数小时。 [1]中已经详细介绍了此事件。

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  • 会议地点 Noordwijk(NL);Noordwijk(NL)
  • 作者

    A. Marchaudon; C. J. Owen; J.-M. Bosqued; R. C. Fear; A. N. Fazakerley; M. W. Dunlop; A. D.rnLahiff; C. Carr; A. Balogh; P.-A. Lindqvist; H. Rème;

  • 作者单位

    Mullard Space Science Laboratory, University College London, Holmbury St Mary, Dorking, RH5 6NT, UK, Email:rnam@mssl.ucl.ac.uk;

    Mullard Space Science Laboratory, University College London, Holmbury St Mary, Dorking, RH5 6NT, UK, cjo@mssl.ucl.ac.uk;

    Centre d'Etude Spatiale des Rayonnements, CESR/CNRS, B.P. 4346, 31028 Toulouse Cedex, France, Email: jeanmichel.rnBosqued@cesr.fr;

    Mullard Space Science Laboratory, University College London, Holmbury St Mary, Dorking, RH5 6NT, UK,rcf@mssl.ucl.ac.uk;

    Mullard Space Science Laboratory, University College London, Holmbury St Mary, Dorking, RH5 6NT, UK, anf@mssl.ucl.ac.uk;

    Rutherford-Appleton Laboratory, Chilton, Didcot, Oxon, OX11 0QX, UK, Email: m.dunlop@rl.ac.uk;

    Mullard Space Science Laboratory, University College London, Holmbury St Mary, Dorking, RH;

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